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Posted to issues@hive.apache.org by "Gopal V (JIRA)" <ji...@apache.org> on 2018/05/07 22:32:00 UTC
[jira] [Commented] (HIVE-19446) QueryCache: Transaction lists
needed for pending cache entries
[ https://issues.apache.org/jira/browse/HIVE-19446?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16466555#comment-16466555 ]
Gopal V commented on HIVE-19446:
--------------------------------
Lookups that happen too early are triggering this NPE.
{code}
Caused by: java.lang.NullPointerException
at org.apache.hadoop.hive.ql.cache.results.QueryResultsCache.entryMatches(QueryResultsCache.java:705) ~[hive-exec-3.0.0-SNAPSHOT.jar:3.0.0-SNAPSHOT]
at org.apache.hadoop.hive.ql.cache.results.QueryResultsCache.lookup(QueryResultsCache.java:442) ~[hive-exec-3.0.0-SNAPSHOT.jar:3.0.0-SNAPSHOT]
at org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.checkResultsCache(SemanticAnalyzer.java:14703) ~[hive-exec-3.0.0-SNAPSHOT.jar:3.0.0-SNAPSHOT]
at org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.analyzeInternal(SemanticAnalyzer.java:12060) ~[hive-exec-3.0.0-SNAPSHOT.jar:3.0.0-SNAPSHOT]
at org.apache.hadoop.hive.ql.parse.CalcitePlanner.analyzeInternal(CalcitePlanner.java:334) ~[hive-exec-3.0.0-SNAPSHOT.jar:3.0.0-SNAPSHOT]
at org.apache.hadoop.hive.ql.parse.BaseSemanticAnalyzer.analyze(BaseSemanticAnalyzer.java:288) ~[hive-exec-3.0.0-SNAPSHOT.jar:3.0.0-SNAPSHOT]
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{code}
> QueryCache: Transaction lists needed for pending cache entries
> --------------------------------------------------------------
>
> Key: HIVE-19446
> URL: https://issues.apache.org/jira/browse/HIVE-19446
> Project: Hive
> Issue Type: Bug
> Reporter: Gopal V
> Assignee: Jason Dere
> Priority: Major
>
> Hive query-cache needs a transactional list, even when the entry is pending state so that other identical queries with the same transactional state can wait for the first query to complete, instead of triggering their own instance.
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